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https://www.readbyqxmd.com/read/28927155/ras-protein-activator-like-1-is-functionally-involved-in-hypoxia-resistance-in-breast-cancer-cells-by-targeting-hypoxia-inducible-factor-1%C3%AE
#1
Ziming Huang, Rong Wang, Gang Wei, Ran Jiang, Yuan Zheng, Yiwen Tian, Bo Chen, Chunmei Ye, Mingxing Xue, Chunjiao Yu
RAS protein activator-like 1 (RASAL1) is a member of the RAS GTPase-activating protein family, and previous studies indicate that RASAL1 is involved in the progression of hypoxia resistance in breast cancer cells. In the present study, increased levels of hypoxia inducible factor-1α (HIF-1α) were observed to be accompanied with increased expression of RASAL1 in the breast cancer cell lines MCF-7 and MDA-MB-231 cells under hypoxia. Based on this, it was postulated that RASAL1 may serve a functional role in the development of hypoxia resistant in breast cancer cells...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927154/resistance-to-the-mtor-inhibitor-everolimus-is-reversed-by-the-downregulation-of-survivin-in-breast-cancer-cells
#2
Ludovica Taglieri, Francesca De Iuliis, Anna Giuffrida, Sabrina Giantulli, Ida Silvestri, Susanna Scarpa
Everolimus (RAD001) is an inhibitor of mammalian target of rapamycin used in combination with exemestane to treat hormone receptor-positive advanced breast cancer. However, not all patients are equally sensitive to RAD001 and certain patients develop resistance. Therefore, the present study analyzed the mechanisms involved in the resistance of breast cancer cells to RAD001 in order to identify a potential tool to overcome it. The effects of RAD001 on the inhibition of cell viability, on the induction of apoptosis and autophagy and on the regulation of survivin, an anti-apoptotic protein, were evaluated in two breast cancer cell lines: BT474 (luminal B) and MCF7 (luminal A)...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927135/comparison-of-the-protein-expression-of-calpain-1-calpain-2-calpastatin-and-calmodulin-between-gastric-cancer-and-normal-gastric-mucosa
#3
Bide Liu, Yu Zhou, Dan Lu, Yong Liu, Si-Quan Zhang, Yan Xu, Wei Li, Xiao Gu
The understanding of molecular mechanisms that are involved in the development and the progression of gastric cancer (GC) are of importance for the diagnosis and treatment. The calpain system, which contains the calpains and the endogenous inhibitor, has been suggested as an important factor in the tumorigenesis and migration of colorectal adenocarcinoma, breast and ovarian cancer, and as a prognostic marker for GC. However, the expression level of calpain system proteins in GC and normal-appearing peritumoral gastric mucosa remain unknown...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927133/benefit-of-rebiopsy-for-deciding-treatment-strategy-in-rectal-cancer-a-case-report
#4
Kenta Kawasaki, Yasuo Hamamoto, Takeshi Suzuki, Kenro Hirata, Yasutaka Sukawa, Akiyoshi Kasuga, Yuichiro Hayashi, Hiromasa Takaishi, Kaori Kameyama, Takanori Kanai
Rebiopsy is considered an option for specific types of cancer, such as breast, non-small cell lung, and prostate cancer, in clinical trials and in practice. The benefit of rebiopsy comes from the selection of a new treatment strategy based on the genetic profile of the cells, which may reflect the development of drug resistance or hormonal changes. For colorectal cancer, the presence of different genomic mutations between the primary tumor and its metastases is rare, and rebiopsy is therefore not generally performed...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927122/mechanism-of-egcg-promoting-apoptosis-of-mcf-7-cell-line-in-human-breast-cancer
#5
Chao-You Huang, Zheng Han, Xi Li, Hui-Hua Xie, Shan-Shan Zhu
The aim of the present study was to investigate the effects of epigallocatechin-3-gallate (EGCG) on the apoptosis of the human MCF-7 cancer cell line and the underlying mechanism. MCF-7 cells were divided into the control group and EGCG groups. The proliferation of MCF-7 cells in the two groups was determined using MTT and apoptosis was examined using flow cytometry. Western blot analysis and qRT-PCR were used to analyze P53 and Bcl-2 expression levels. The silencing effect of specific siRNA was evaluated using RT-PCR and western blot analysis...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927120/expression-and-clinical-significance-of-satb1-and-tlr4-in-breast-cancer
#6
Xuebo Wang, Xiumei Yu, Qingli Wang, Yingying Lu, Haixia Chen
This study investigated the expression of special AT-rich sequence-binding protein 1 (SATB1) and toll-like receptor 4 (TLR4) protein in breast cancer and its clinical significance. We collected breast cancer tissues from 120 patients and adjacent non-cancerous tissue from 53 patients. SATB1 was expressed in 89 cases of breast cancer (74.17%) and in 7 cases of adjacent non-cancerous tissue (13.21%). TLR4 was expressed in 70 cases of breast cancer tissues (58.33%) and in 48 cases of adjacent non-cancerous tissue (90...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927117/salvia-miltiorrhiza-extract-inhibits-tpa-induced-mmp-9-expression-and-invasion-through-the-mapk-ap-1-signaling-pathway-in-human-breast-cancer-mcf-7-cells
#7
Jeong-Mi Kim, Eun-Mi Noh, Hyun-Kyung Song, Minok Lee, Soo Ho Lee, Sueng Hyuk Park, Chan-Keun Ahn, Guem-San Lee, Eui-Baek Byun, Beom-Su Jang, Kang-Beom Kwon, Young-Rae Lee
Cancer cell invasion is crucial for metastasis. A major factor in the capacity of cancer cell invasion is the activation of matrix metalloproteinase-9 (MMP-9), which degrades the extracellular matrix. Salvia miltiorrhiza has been used as a promotion for blood circulation to remove blood stasis. Numerous previous studies have demonstrated that S. miltiorrhiza extracts (SME) decrease lipid levels and inhibit inflammation. However, the mechanism behind the effect of SME on breast cancer invasion has not been identified...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927115/wee1-inhibition-by-mk1775-as-a-single-agent-therapy-inhibits-ovarian-cancer-viability
#8
Minghui Zhang, Donye Dominguez, Siqi Chen, Jie Fan, Lei Qin, Alan Long, Xia Li, Yi Zhang, Huirong Shi, Bin Zhang
Wee1-like protein kinase (WEE1) physiologically serves a key function in maintaining the integrity of the cell genome through mediating the activation of cyclin-dependent kinase (CDK)1 and CDK2. Increased expression of WEE1 has been associated with the poor prognosis of patients with ovarian cancer. The present study aimed at examining the in vitro and in vivo antitumor activity of MK1775, a potent pharmacological inhibitor of WEE1, as a single agent against ovarian cancer cells. The cytotoxicity of MK1775 was examined in a panel of tumor cells using MTT in vitro...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927100/hsa-mir-599-suppresses-the-migration-and-invasion-by-targeting-brd4-in-breast-cancer
#9
Yonghui Wang, Yana Sui, Qinwei Zhu, Xiaomei Sui
Breast cancer is the second leading cause of cancer-associated mortality in females in the USA. Hsa-miR-599 was demonstrated to function as a tumour suppressor during cancer progression. However, the function and mechanism of the hsa-miR-599 in human breast cancer remain elusive. Thus, the aim of the present study was to investigate the potential role of hsa-miR-599 in breast cancer biology. The expression levels of hsa-miR-599 in 40 pairs of surgical specimens and human breast cancer cell lines were detected using quantitative polymerase chain reaction analysis...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927053/synthesis-biological-evaluation-and-mechanism-studies-of-matrine-derivatives-as-anticancer-agents
#10
Lihe Jiang, Lichuan Wu, Fangfang Yang, Nadin Almosnid, Xu Liu, Jun Jiang, Elliot Altman, Lisheng Wang, Ying Gao
A total of five matrine derivatives were synthesized and evaluated for their anti-proliferation activity using a panel of four human cancer cell lines, including A549 lung, BT20 breast, MCF-7 breast and U2OS osteosarcoma cells. The YF3-5, YF3-7 and YF3-9, three novel compounds, demonstrated increased anti-proliferation activity compared with matrine, of which YF3-5 revealed the strongest anti-proliferation activity with a half-maximal inhibitory concentration value of 15.49-16.67 µM against the four human cancer cell lines...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927045/correlation-analysis-between-expression-of-pcna-ki-67-and-cox-2-and-x-ray-features-in-mammography-in-breast-cancer
#11
Xiaoming Qiu, Jixin Mei, Jianjun Yin, Hong Wang, Jinqi Wang, Ming Xie
This study investigated expression of proliferating cell nuclear antigen (PCNA), proliferation-associated nuclear antigen (Ki-67) and cyclooxygenase-2 (COX-2) in tissues of breast invasive ductal carcinoma, and analyzed the correlations between these indexes and X-ray features in mammography. A total of 90 patients who were admitted to Huangshi Central Hospital and diagnosed as breast invasive ductal carcinoma from January 2014 to January 2016 were selected. The expression of PCNA, Ki-67 and COX-2 in cancer tissues and cancer-adjacent normal tissues of patients were detected by immunohistochemical staining, and X-ray features in mammography of patients were observed...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927044/isolation-and-characterization-of-adult-mammary-stem-cells-from-breast-cancer-adjacent-tissues
#12
Ai-Ping Shi, Zhi-Min Fan, Ke-Wei Ma, Yan-Fang Jiang, Lei Wang, Ke-Wei Zhang, Shi-Bo Fu, Ning Xu, Zhi-Ru Zhang
Normal adult mammary stem cells (AMSCs) are promising sources for breast reconstruction, particularly following the resection of breast tumors. However, carcinogenic events can potentially convert normal AMSCs to cancer stem cells, posing a safety concern for the use of AMSCs for clinical tissue regeneration. In the present study, AMSCs and autologous primary breast cancer cells were isolated and compared for their ability to differentiate, their gene expression profile, and their potential to form tumors in vivo...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927032/clinical-study-of-radiofrequency-ablation-combined-with-tace-in-the-treatment-of-breast-cancer-with-liver-metastasis
#13
Haijun Wang, Bin Liu, Houlong Long, Fengfeng Zhang, Silei Wang, Feng Li
We studied the clinical effects of percutaneous radiofrequency ablation (RFCA) combined with trans-catheter arterial chemoembolization (TACE) in the treatment of breast cancer with liver metastasis. Eighty-eight patients with a diagnosis of breast cancer with liver metastasis for the first time and patients with liver metastasis after radical mastectomy were consecutively selected. The subjects were divided according to the different treatment methods. They were divided either into the control group of 50 cases or the observation group of 38 cases...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926955/identification-of-novel-bisbenzimidazole-derivatives-as-anticancer-vacuolar-h%C3%A2-%C2%BA-atpase-inhibitors
#14
Renukadevi Patil, Arpita Kulshrestha, Anjali Tikoo, Sara Fleetwood, Gajendra Katara, Bala Kolli, William Seibel, Alice Gilman-Sachs, Shivaputra A Patil, Kenneth D Beaman
The vacuolar (H⁺)-ATPases (V-ATPases) are a family of ATP-driven proton pumps and they have been associated with cancer invasion, metastasis, and drug resistance. Despite the clear involvement of V-ATPases in cancer, the therapeutic use of V-ATPase-targeting small molecules has not reached human clinical trials to date. Thus, V-ATPases are emerging as important targets for the identification of potential novel therapeutic agents. We identified a bisbenzimidazole derivative (V) as an initial hit from a similarity search using four known V-ATPase inhibitors (I-IV)...
September 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28926939/kempopeptin-c-a-novel-marine-derived-serine-protease-inhibitor-targeting-invasive-breast-cancer
#15
Fatma H Al-Awadhi, Lilibeth A Salvador, Brian K Law, Valerie J Paul, Hendrik Luesch
Kempopeptin C, a novel chlorinated analogue of kempopeptin B, was discovered from a marine cyanobacterium collected from Kemp Channel in Florida. The structure was elucidated using NMR spectroscopy and mass spectrometry (MS). The presence of the basic Lys residue adjacent to the N-terminus of the 3-amino-6-hydroxy-2-piperidone (Ahp) moiety contributed to its selectivity towards trypsin and related proteases. The antiproteolytic activity of kempopeptin C was evaluated against trypsin, plasmin and matriptase and found to inhibit these enzymes with IC50 values of 0...
September 16, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28926932/comparison-of-two-components-of-propolis-caffeic-acid-ca-and-caffeic-acid-phenethyl-ester-cape-induce-apoptosis-and-cell-cycle-arrest-of-breast-cancer-cells-mda-mb-231
#16
Agata Kabała-Dzik, Anna Rzepecka-Stojko, Robert Kubina, Żaneta Jastrzębska-Stojko, Rafał Stojko, Robert Dariusz Wojtyczka, Jerzy Stojko
Studies show that caffeic acid (CA) and caffeic acid phenethyl ester (CAPE) are compounds with potent chemopreventive effects. Breast cancer is a common form of aggressive cancer among women worldwide. This study shows a comparison of CA and CAPE activity on triple-negative human caucasian breast adenocarcinoma line cells (MDA-MB-231). MDA-MB-231 cells were treated by CA and CAPE with doses of from 10 to 100 µM, for periods of 24 h and 48 h. Cytotoxicity MTT tests, apoptosis by Annexin V, and cell cycle with Dead Cell Assays were performed...
September 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28926895/-clinical-utility-study-of-21-gene-assay-in-927-chinese-patients-with-early-breast-cancer
#17
J Y Wu, Y Fang, L Lin, Y Zong, X S Chen, O Huang, J R He, L Zhu, W G Chen, Y F Li, K W Shen
Objective: To investigate the distribution patterns of 21-gene assay and its influencing factors in Chinese patients with early breast cancer. Methods: Nine hundred and twenty-seven early breast cancer patients were retrospectively recruited from January 2009 to December 2015 at Ruijin Hospital, Shanghai Jiaotong University School of Medicine. The 21-gene reverse transcriptase-polymerase chain reaction(RT-PCR) assay were conducted in paraffin-embedded tumor tissues to calculate the Recurrence Score(RS). Immunohistochemistry(IHC) assay was used to measure the expression levels of estrogen receptor(ER), progesterone receptor(PR) and Ki-67...
September 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28926729/guidelines-and-recommendations-for-mri-in-breast-cancer-follow-up-a-review
#18
REVIEW
Eduard A van Bodegraven, Jeroen C van Raaij, Mireille Van Goethem, Wiebren A A Tjalma
OBJECTIVE: Present article will perform a review regarding the current recommendations of Magnetic resonance imaging (MRI) in routine follow-up after successfully treated breast cancer by surgery, radiation and/or systemic therapy. METHODS: For this review, a literature review search was done with the MeSH-terms: Magnetic Resonance Imaging, breast neoplasm, post-operative period and follow-up, according to PRISMA. The literature published between 2006 and 2016 in MedBase, PubMed and Embase was consulted...
September 14, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28926676/randomized-controlled-trial-of-increasing-physical-activity-on-objectively-measured-and-self-reported-cognitive-functioning-among-breast-cancer-survivors-the-memory-motion-study
#19
Sheri J Hartman, Sandahl H Nelson, Emily Myers, Loki Natarajan, Dorothy D Sears, Barton W Palmer, Lauren S Weiner, Barbara A Parker, Ruth E Patterson
BACKGROUND: Increasing physical activity can improve cognition in healthy and cognitively impaired adults; however, the benefits for cancer survivors are unknown. The current study examined a 12-week physical activity intervention, compared with a control condition, on objective and self-reported cognition among breast cancer survivors. METHODS: Sedentary breast cancer survivors were randomized to an exercise arm (n = 43) or a control arm (n = 44). At baseline and at 12 weeks, objective cognition was measured with the National Institutes of Health Cognitive Toolbox, and self-reported cognition using the Patient-Reported Outcomes Measurement Information System scales...
September 19, 2017: Cancer
https://www.readbyqxmd.com/read/28926528/the-improving-rural-cancer-outcomes-trial-a-cluster-randomised-controlled-trial-of-a-complex-intervention-to-reduce-time-to-diagnosis-in-rural-cancer-patients-in-western-australia
#20
Jon D Emery, Victoria Gray, Fiona M Walter, Shelley Cheetham, Emma J Croager, Terry Slevin, Christobel Saunders, Timothy Threlfall, Kirsten Auret, Anna K Nowak, Elizabeth Geelhoed, Max Bulsara, C D'Arcy J Holman
BACKGROUND: Rural Australians have poorer survival for most common cancers, due partially to later diagnosis. Internationally, several initiatives to improve cancer outcomes have focused on earlier presentation to healthcare and timely diagnosis. We aimed to measure the effect of community-based symptom awareness and general practice-based educational interventions on the time to diagnosis in rural patients presenting with breast, prostate, colorectal or lung cancer in Western Australia...
September 19, 2017: British Journal of Cancer
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